Dr. Bob Goldstein has carefully selected the 3 best natural ingredients, making these topical products effective and protective powerhouses. The special combination of Virginia Cedar, Peppermint & Almond Oil works on repelling both fleas and ticks, and is safe for animals, humans and the environment. Did you know that chemical flea and tick collars contain pesticides that can be harmful to your dog or cat and family? Our herbal collars are the natural alternative to these collars that contain harsh chemicals. Each collar is infused with a natural blend of aromatic herbs and essential oils with a fresh, minty fragrance.